Control Panel for 3ph Heaters

[Darkwood]

Heres a recent one i did just to express the slotted trunking suggestion and how neat a simple cheap addition actually looks.

 

[jparker86]

View attachment 14003 Heres a recent one i did just to express the slotted trunking suggestion and how neat a simple cheap addition actually looks.

Can you enlarge it?

 

[Darkwood]

Can you enlarge it?

im trying bare with me

 

[jparker86]

im trying bare with me

Darkwood thanks for bearing with me.
As I said I only need two poles so you think that contactor I posted earlier with 1,2,3,4 + A1 + A2 will be ok? It doesn't have any NO contacts though. But looking at this drawing it doesnt matter? Correct?

 

[Darkwood]

Trying to see if can get it larger.

Contactors are generally N/O ..this is the de-energised state the one you have i assume has 2 N/O poles that close when coil is energised, re' this pick it would normally not be as tight and compact but has some space restrictions as it was a sample and will have all its internals removed and fitted into a main cab of a larger control system, also due to this just been a temp' set up ive left out a cooling fan and filter just in case any keen eyes try pulling me on it.

 

[jparker86]

Wow that looks ace Darkwood. This is what I will hopefully one day achieve lol.
So what I will do now is go home and try and figure out what you guys have done and report this evening with another drawing.

 

[Darkwood]

:blush5:...... believe it or not this is a simpler set up than yours, dont get overwelmed by the drives but it was rushed and i was restricted with spec's on the cab' size so got a little more crowded than i like, only difference here to yours is the trunking and the numbering of all cables but you can see what a £10 worth of extra gear can achieve.

 

[jparker86]

:blush5:...... believe it or not this is a simpler set up than yours, dont get overwelmed by the drives but it was rushed and i was restricted with spec's on the cab' size so got a little more crowded than i like, only difference here to yours is the trunking and the numbering of all cables but you can see what a £10 worth of extra gear can achieve.

You see as much as I would love to pay someone to do the job first time around, I love to know how things work.
When I sell a pce of equipment I love to know how each and everything works. Before I come on this forum I wasn't that clued up on how a contactor worked, etc... and to be honest I am probably still a bit lost but at least now if anything goes wrong or the customer asks me a question I can give him an answer based on my experiences and that in my business is priceless. I hate nothing more than speaking with someone about something and he says "Ill have to ask my boss...".
I have drew the control circuit out on paper and see what you think. Please let me know if I have got all the wires going to the correct place. (please ignore the writing diagram which doesnt have anything going to A1!)

 

[Darkwood]

it would function but it is poor design, consider a latching stop button or holding stop in, at the same time push start this will pull the contactor in, your stop button should be before the start in series and take your latching relay source from the outgoing off the stop button, this way it breaks both power to the start button and power to the latch loop.
Put your stop before your start in series then take your supply to terminal marked 2 from the out going of the stop or input of the start (same thing)

If you follow that ....now if you hold stop in and press start it wont pull the contactor in.

 

[Knobhead]

When I sell a pce of equipment I love to know how each and everything works.

Out of curiosity what do you normally sell?